Double fastener can be pulled off on one side to connect two panelsUse for double-walled or canted, unsealed doors and side walls, top and bottom instead of three-point locking, bars and bar guides are not necessary.The double fasteners keep the door in place and prevent rattling. Installation fastened bolted side: 30x10 mmInstallation hole pull-off side: 28x10 bis 30x16 mmPull-off forces: ca. 15, 30 oder 50N